TLD5045EJ Infineon Technologies, TLD5045EJ Datasheet - Page 11

• Manufacturer Part Number: TLD5045EJ
• Manufacturer: Infineon Technologies

Specifications of TLD5045EJ

• Packages: PG-DSO-8
• Topology: DC-DC Buck
• Vs (min): 5.0 V
• Vs (max): 40.0 V
• Vq (max): -
• Iq (max): 700.0 mA

6
6.1
Enable function:
A logic high signal on the EN pin turns the device on. A logic low signal on enable pin EN brings the device in sleep
mode. The current consumption is typ. 0.1µA in this case. The EN pin has an internal pull down resistor which
ensures that the IC is in sleep mode and the power stage is switched off in case the pin EN is externally not
connected.
Dimming function:
The PWMI pin combines two functions:
1) PWM dimmming via a µC (3.3Vand 5V µC)
2) Integrated PWM dimming engine for standalone solutions in decentralized light module (frequency and duty
cycle adjustable via external R,C network)
A detailed description of the PWMI pin is displayed in
Figure 4
Datasheet
V
V
PWMI,OFF
PWMI,ON
V
PWMI
Enable, Dimming Function and Thermal Protection
Description
PWMI Pin description
SW-
ON
SW - OFF
SW-
ON
PWMI ON
PWMI OFF
SW - OFF
Internal PWM
Figure 4
11
Enable, Dimming Function and Thermal Protection
DC=100%
below.
DC=0%
SW-
ON
SW - OFF
SW-
ON
Rev. 1.0, 2011-05-27
SW - OFF
TLD5045EJ
t